These characteristics make Theia much superior to all the
competition. The deep fields will achieve 23 times the proper motion
precision of Gaia (10
years)https://www.cosmos.esa.int/web/gaia/science-performance#astrometric%20performance
and 14 times that of HST[1]} (10 years). In the
bright-star regime[2]}, Theia's 1-\(\mu \) as precision in
1-hr integration at the reference value \(R=10\)  mag exceeds that of
Gaia [3]}, Roman[4]}, and VLTI/GRAVITY[5]} by factors of \(\sim 40-50\) ,
\(\sim 10-20\) , and \(\sim 30-100\)  respectively, and other
missions/instruments (e.g., HST, JWST, ELT/MICADO, Rubin) by
even larger factors.
